/*
 * This file is part of aion-engine <aion-engine.com>
 *
 * aion-engine is private software: you can redistribute it and or modify
 * it under the terms of the GNU Lesser Public License as published by
 * the Private Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * aion-engine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser Public License
 * along with aion-engine.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.aionengine.gameserver.network;

import java.nio.ByteBuffer;


/**
 * @author -Nemesiss-
 */
public abstract class PacketWriteHelper {

    protected abstract void writeMe(ByteBuffer buf);

    /**
     * Write int to buffer.
     *
     * @param buf
     * @param value
     */
    protected final void writeD(ByteBuffer buf, int value) {
        buf.putInt(value);
    }

    /**
     * Write short to buffer.
     *
     * @param buf
     * @param value
     */
    protected final void writeH(ByteBuffer buf, int value) {
        buf.putShort((short) value);
    }

    /**
     * Write byte to buffer.
     *
     * @param buf
     * @param value
     */
    protected final void writeC(ByteBuffer buf, int value) {
        buf.put((byte) value);
    }

    /**
     * Write double to buffer.
     *
     * @param buf
     * @param value
     */
    protected final void writeDF(ByteBuffer buf, double value) {
        buf.putDouble(value);
    }

    /**
     * Write float to buffer.
     *
     * @param buf
     * @param value
     */
    protected final void writeF(ByteBuffer buf, float value) {
        buf.putFloat(value);
    }

    /**
     * Write long to buffer.
     *
     * @param buf
     * @param value
     */
    protected final void writeQ(ByteBuffer buf, long value) {
        buf.putLong(value);
    }

    /**
     * Write String to buffer
     *
     * @param buf
     * @param text
     */
    protected final void writeS(ByteBuffer buf, String text) {
        if (text == null) {
            buf.putChar('\000');
        } else {
            final int len = text.length();
            for (int i = 0; i < len; i++)
                buf.putChar(text.charAt(i));
            buf.putChar('\000');
        }
    }

    /**
     * Write byte array to buffer.
     *
     * @param buf
     * @param data
     */
    protected final void writeB(ByteBuffer buf, byte[] data) {
        buf.put(data);
    }

    /**
     * Skip specified amount of bytes
     *
     * @param buf
     * @param bytes
     */
    protected final void skip(ByteBuffer buf, int bytes) {
        buf.put(new byte[bytes]);
    }
}
